It's for zdoom, you can spawn friendly AI. Pick up a medikit/stimpack/soul sphere/megasphere and use the [ and ] keys to select a friendly (may need to bind them to inventory previous/next first). Then press enter to spawn the friendly. I've modified the first few to have 100 health, but the rest will still be way, way overpowered, I'm after some feedback on health, pain chance and their firepower.